void _accelerometer_CurrentValueChanged(object sender, SensorReadingEventArgs <AccelerometerReading> e)
    {
        var position = e.SensorReading.Acceleration;

        SmartDispatcher.Dispatch(() =>
        {
            this.XValue = position.X.ToString("0.0000");
            this.YValue = position.Y.ToString("0.0000");
            this.ZValue = position.Z.ToString("0.0000");
        });
    }